<template>
  <scroll-view
    class="album_scroll_view"
    scroll-y
    @scrolltolower="handleToLower"
  >
    <!-- 轮播图 开始 -->
    <!-- swiper 1.自动轮播 autoplay 2.指示器 indicator-dots 3.衔接轮播 circular 
    4.swiper默认的高度150px 5.image 默认的宽度 320px 默认的高度 240px 
    6.计算图片的宽度和高度的比例 7.把图片的比例也写到swiper标签样式
    8.swiper-item 默认宽高 100%-->
    <view class="album_swiper">
      <swiper indicator-dots autoplay circular>
        <swiper-item v-for="item in banner" :key="item.id">
          <image :src="item.thumb" />
        </swiper-item>
      </swiper>
    </view>
    <!-- 轮播图 结束 -->

    <!-- 列表 开始 -->
    <view class="album_list">
      <navigator
        class="album_item"
        v-for="item in album"
        :key="item.id"
        :url="`/pages/album/index?id=${item.id}`"
      >
        <view class="album_img">
          <image :src="item.cover" mode="aspectFill" />
        </view>
        <view class="album_info">
          <view class="album_name">{{ item.name }}</view>
          <view class="album_desc">{{ item.desc }}</view>
          <view class="album_btn">
            <view class="album_attention">关注</view>
          </view>
        </view>
      </navigator>
    </view>
    <!-- 列表 结束 -->
  </scroll-view>
</template>

<script>
export default {
  data() {
    return {
      params: {
        limit: 30,
        order: 'new',
        skip: 0,
      },
      // 轮播图数组
      banner: [],
      // 列表数组
      album: [],
      // 是否还有分页数据
      hasMore: true,
    }
  },
  mounted() {
    // 修改页面的标题
    uni.setNavigationBarTitle({ title: '专辑' })
    // 调用获取数据的方法
    this.getList()
  },
  methods: {
    // 获取接口的数据
    getList() {
      this.request({
        url: 'http://service.picasso.adesk.com/v1/wallpaper/album',
        data: this.params,
      }).then((result) => {
        if (this.banner.length === 0) {
          this.banner = result.res.banner
        }
        if (result.res.album.length === 0) {
          this.hasMore = false
          return
        }
        this.album = [...this.album, ...result.res.album]
      })
    },
    // 上拉加载
    handleToLower() {
      if (this.hasMore) {
        this.params.skip += this.params.limit
        this.getList()
      } else {
        uni.showToast({
          title: '没有数据了',
          icon: 'none',
        })
      }
    },
  },
}
</script>

<style lang="scss" scoped>
.album_scroll_view {
  height: calc(100vh - 36px);
}

.album_swiper {
  swiper {
    // 750rpx
    height: calc(750rpx / 2.3);
    image {
      height: 100%;
    }
  }
}

.album_list {
  padding: 10rpx;
  .album_item {
    padding: 10rpx 0;
    display: flex;
    border-bottom: 1rpx solid #ccc;
    .album_img {
      flex: 1;
      padding: 10rpx;
      image {
        width: 200rpx;
        height: 200rpx;
      }
    }
    .album_info {
      flex: 2;
      overflow: hidden;
      padding: 0 10rpx;
      .album_name {
        font-size: 30rpx;
        color: #000;
        padding: 10rpx 0;
      }
      .album_desc {
        padding: 10rpx 0;
        font-size: 24rpx;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
      }
      .album_btn {
        padding: 10rpx;
        display: flex;
        justify-content: flex-end;
        .album_attention {
          color: $color;
          border: 1rpx solid $color;
          padding: 10rpx;
        }
      }
    }
  }
}
</style>